Magnetic steel positioning tool and magnetic steel pasting device

Abstract

The application discloses a magnetic steel positioning tool and a magnetic steel pasting device. In the magnetic steel positioning tool, the magnetic steel can be continuously pasted without waiting for the glue to solidify through the combined design of the tool ring and the positioning plug, the tolerance accumulation problem caused by pasting the magnetic steel block by block in the prior art is effectively avoided, the position deviation of all the magnetic steel is significantly reduced, the cogging force and torque ripple of the motor are greatly reduced, and the motor running stability is improved. Meanwhile, the tool structure simplifies the operation process, shortens the production period of the magnetic steel pasting, improves the production efficiency, and solves the problem of motor performance decline caused by the excessive position deviation of the magnetic steel.

Description

Technical Field

[0001] This application relates to the field of motor rotor technology, and in particular to a magnet positioning fixture and a magnet attaching device. Background Technology

[0002] In existing technologies for attaching magnets to surface-mount motors, the structural limitations of the steps on both sides of the rotor necessitate the use of simple T-shaped fixtures for positioning each magnet individually. After each magnet is attached, the fixture must be removed before attaching the next, making it difficult to effectively control the positional accuracy of the magnets across the entire rotor. As the number of magnets increases, the dimensional tolerances of the magnets themselves gradually accumulate, causing the error to amplify, ultimately resulting in a particularly significant positional deviation for the last magnet. This positional deviation further leads to a significant increase in the motor's cogging torque and torque ripple, severely impacting the motor's overall performance. Utility Model Content

[0003] To solve the above-mentioned technical problems, this application provides a magnet positioning fixture for a surface-mount motor rotor. The motor rotor includes an annular body and a flange extending radially outward from the end of the annular body. A plurality of magnets are attached to the outer surface of the annular body.

[0004] The magnetic positioning fixture includes:

[0005] Base;

[0006] A tooling ring, one end of which is detachably mounted on the base, and the tooling ring forms an accommodating space for accommodating the flange and at least a portion of the annular body; wherein, when the annular body is disposed within the accommodating space, the central axis of the annular body overlaps with the central axis of the tooling ring;

[0007] Multiple positioning blocks are detachably inserted into the other end of the tooling ring, and the multiple positioning blocks and the tooling ring form multiple magnet attachment areas on the surface of the annular body.

[0008] The plurality of positioning blocks are arranged sequentially at intervals along the circumference of the tooling ring on the inner side of the tooling ring, and the distance between any positioning block and the adjacent positioning block is equal.

[0009] The tooling ring has multiple through slots on its inner side. The through slots extend in a direction parallel to the axial direction of the tooling ring and are spaced apart in sequence along the circumference of the tooling ring. The through slots correspond to the positioning blocks, and the positioning blocks are inserted into the tooling ring through the through slots.

[0010] Wherein, the first end of the positioning block is inserted into the through groove, and the width of the first end of the positioning block is smaller than the width of the second end of the positioning block;

[0011] The first end and the second end of the positioning block are two opposite ends of the positioning block.

[0012] The first end of the positioning block is provided with two protrusions, which are respectively located on opposite sides of the first end of the positioning block.

[0013] The cross-sectional profile of the through groove is composed of an opening and a cavity. The width of the opening is smaller than the width of the cavity, and the cross-sectional shape of the cavity corresponds to the cross-sectional shape of the first end of the positioning block.

[0014] Wherein, the inner diameter of the tooling ring is greater than or equal to the outer diameter of the flange.

[0015] The base is provided with a first protruding ring, the outer diameter of which corresponds to the inner diameter of the tooling ring.

[0016] The base is further provided with a second protruding ring, the size of which is smaller than that of the first protruding ring, and the central axis of the second protruding ring overlaps with the central axis of the first protruding ring.

[0017] The outer diameter of the second raised ring corresponds to the inner diameter of the ring-shaped body.

[0018] The magnetic positioning fixture further includes at least one fixing component, which is inserted through the base and has one end detachably connected to the motor rotor.

[0019] To solve the above-mentioned technical problems, this application also provides a magnet-attaching device, which includes a magnet positioning fixture and a moving component as described above. The moving component is spaced apart from the magnet positioning fixture and is used to place the motor rotor on the magnet positioning fixture and attach multiple magnets to the motor rotor.

[0020] The beneficial effects of this application are as follows: Unlike existing technologies, the magnet positioning fixture provided in this application includes a base, a fixture ring, and multiple positioning blocks. One end of the fixture ring is detachably mounted on the base, and the fixture ring forms an accommodating space for accommodating the flange and part of the annular body of the motor rotor; when the annular body is mounted on the fixture ring, the central axis of the annular body overlaps with the central axis of the fixture ring. Multiple positioning blocks are detachably inserted into the other end of the fixture ring, and the multiple positioning blocks and the fixture ring form multiple magnet mounting areas on the surface of the annular body of the motor rotor. Through the combined design of the fixture ring and positioning blocks, magnets can be continuously mounted without waiting for the adhesive to cure, effectively avoiding the tolerance accumulation problem caused by mounting one block at a time in existing technologies, significantly reducing the positional deviation of all magnets, thereby greatly reducing the cogging force and torque pulsation of the motor and improving the smoothness of motor operation. Meanwhile, this tooling structure simplifies the operation process, shortens the production cycle of magnet placement, improves production efficiency, and solves the problem of motor performance degradation caused by excessive magnet position deviation. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] in:

[0023] Figure 1 This is a schematic diagram of the structure of an embodiment of the motor rotor of this application;

[0024] Figure 2 This is a structural schematic diagram of the first embodiment of the magnetic positioning fixture of this application;

[0025] Figure 3 yes Figure 2 Exploded view of the positioning fixture for medium-sized magnetic steel;

[0026] Figure 4 This is a structural schematic diagram of the second embodiment of the magnetic steel positioning fixture of this application;

[0027] Figure 5 yes Figure 4 Exploded view of the positioning fixture for medium-sized magnetic steel;

[0028] Figure 6 This is a schematic diagram of the structure of an embodiment of the tooling ring of this application;

[0029] Figure 7 This is a schematic diagram of the structure of an embodiment of the positioning insert block of this application;

[0030] Figure 8 This is a schematic diagram of the structure of one embodiment of the base of this application;

[0031] Figure 9 This is a schematic diagram of another embodiment of the magnetic positioning fixture of this application;

[0032] Figure 10 yes Figure 9 Exploded view of the positioning fixture for medium-sized magnetic steel.

[0033] Reference numerals: 1. Magnet positioning fixture; 11. Base; 111. First raised ring; 112. Second raised ring; 12. Fixture ring; 121. Through groove; 13. Positioning block; 131. Protrusion; 14. Fixture; 2. Motor rotor; 21. Ring-shaped body; 22. Flange; 3. Magnet. Detailed Implementation

[0034] The embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0035] In the following description, specific details such as particular system architectures, interfaces, and technologies are presented for illustrative purposes rather than for limiting purposes, in order to provide a thorough understanding of this application.

[0036] In this application, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0037] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A alone, A and B simultaneously, and B alone. Additionally, the character " / " generally indicates that the preceding and following related objects are in an "or" relationship. Furthermore, "many" in this application means two or more. Moreover, the term "at least one" in this application means any combination of at least two of any one or more of a plurality of objects. For example, including at least one of A, B, and C can mean including any one or more elements selected from the set consisting of A, B, and C. Furthermore, the terms "first," "second," and "third" in this application are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features.

[0038] Please refer to the following first. Figure 1 , Figure 1This is a schematic diagram of the structure of the motor rotor 2, wherein the motor rotor 2 includes an annular body 21 and a flange 22 extending radially outward from the end of the annular body 21. Multiple magnets 3 can be attached to the outer side of the annular body 21, that is, the position between the two flanges 22.

[0039] Due to structural limitations of the motor rotor 2, existing techniques for attaching magnets 3 to the surface of the motor rotor 2 typically involve using a simple T-shaped fixture to position the magnets 3 on the surface. After the magnets 3 are attached to the surface with adhesive, the T-shaped fixture can be moved to the next magnet 3's placement area to position it once the adhesive has cured. During this process, the dimensional tolerances of the magnets 3 gradually accumulate, causing the error to continuously increase. Furthermore, the T-shaped fixture needs to wait for the adhesive on the magnets 3 to cure before it can position the next magnet 3, severely impacting the efficiency of attaching magnets 3 to the motor rotor 2.

[0040] To address the aforementioned problems, this application provides a magnetic positioning fixture. Please refer to [link / reference]. Figure 2 and Figure 3 The magnetic steel positioning fixture 1 provided in this application embodiment includes a base 11, a fixture ring 12, and multiple positioning blocks 13.

[0041] One end of the tooling ring 12 is detachably mounted on the base 11, and the tooling ring 12 forms a receiving space for accommodating the flange 22 of the motor rotor 2 and at least part of the annular body 21. When the annular body 21 is disposed in the receiving space, the central axis of the annular body 21 overlaps with the central axis of the tooling ring 12. A plurality of positioning blocks 13 are detachably inserted into the other end of the tooling ring 12, and the plurality of positioning blocks 13 and the tooling ring 12 form a plurality of magnet attachment areas on the surface of the annular body 21.

[0042] For details, please refer to the following: Figure 4 and Figure 5 ,like Figure 4 and Figure 5 The diagram shown is a schematic diagram of the structure of the motor rotor 2 set on the magnet positioning fixture 1. At this time, the annular body 21 is partially set in the accommodating space, and multiple positioning blocks 13 are inserted into the fixture ring 12. Any two adjacent positioning blocks 13 can form a magnet attaching area on the surface of the annular body 21.

[0043] In practical applications, the motor rotor 2 can be placed into the accommodating space formed by the tooling ring 12 first, so that the flange 22 enters the accommodating space first, so as to avoid the flange 22 and prevent the flange 22 from affecting the subsequent positioning. Then, multiple positioning blocks 13 are inserted into the tooling ring 12 so that multiple positioning blocks 13 form multiple magnet attaching areas on the surface of the annular body 21.

[0044] In this embodiment, the magnet positioning fixture 1 can simultaneously form multiple magnet 3 attachment areas on the surface of the annular body 21, thus avoiding the problem of tolerance accumulation in the prior art. At the same time, it enables multiple magnets 3 to be attached to the surface of the annular body 21 at the same time, solving the problem of low efficiency in the prior art where the T-shaped fixture can only be moved to attach the next magnet 3 after the glue of the previous magnet 3 has cured.

[0045] In summary, in this embodiment, through the combined design of the tooling ring 12 and the positioning insert 13, the magnets 3 can be continuously attached without waiting for the adhesive to cure. This effectively avoids the tolerance accumulation problem caused by attaching one piece at a time in the prior art, significantly reducing the positional deviation of all magnets 3. This greatly reduces the cogging force and torque pulsation of the motor equipped with the motor rotor 2, improving the smoothness of motor operation. At the same time, the magnet positioning tooling 1 provided in this embodiment simplifies the operation process of attaching magnets 3 to the motor rotor 2, shortens the manufacturing cycle of magnet 3 attachment, improves production efficiency, solves the problem of motor performance degradation caused by excessive positional deviation of magnets 3, and enhances the practicality of the magnet positioning tooling 1.

[0046] In one embodiment, the inner diameter of the tooling ring 12 is greater than or equal to the outer diameter of the flange 22.

[0047] The inner diameter of the tooling ring 12 refers to the diameter of the inner side of the tooling ring 12. The inner diameter of the tooling ring 12 is greater than or equal to the outer diameter of the flange 22, which ensures that the flange 22 can be completely placed into the accommodating space formed by the tooling ring 12, avoiding interference or positioning offset during installation.

[0048] In this embodiment, by ensuring that the inner diameter of the tooling ring 12 is greater than or equal to the outer diameter of the flange 22, it is ensured that the motor rotor 2 can be accurately and unobstructedly placed into the accommodating space of the tooling ring 12, achieving precise alignment between the central axis of the annular body 21 and the central axis of the tooling ring 12. This provides a stable foundation for the magnet mounting area formed by the positioning insert 13 on the surface of the annular body 21, allowing the magnets 3 to be continuously mounted without waiting for the adhesive to cure, effectively eliminating the tolerance accumulation problem caused by mounting one piece at a time. This significantly improves the positional accuracy of the magnets 3, greatly reduces the motor cogging force and torque pulsation, thereby significantly improving the motor's running smoothness and overall performance.

[0049] Optionally, a plurality of positioning blocks 13 are arranged sequentially at intervals on the inner side of the tooling ring 12 along the circumference of the tooling ring 12, and the distance between any positioning block 13 and the adjacent positioning block 13 is equal.

[0050] Since the motor rotor 2 is set in the accommodating space formed by the tooling ring 12, the surface of the annular body 21 is spaced apart from the inner side of the tooling ring 12. Therefore, multiple positioning blocks 13 are inserted into the inner side of the tooling ring 12. The multiple positioning blocks 13 can form multiple magnet 3 attachment areas close to the surface of the annular body 21, avoiding the situation where the positioning blocks 13 are too far away from the surface of the annular body 21, resulting in poor positioning effect.

[0051] Furthermore, since the distance between any positioning block 13 and its adjacent positioning block 13 is equal, all magnet 3 mounting positions are based on the same tooling reference, thus solving the problem of magnet 3 mounting tolerance accumulation in the prior art.

[0052] In this embodiment, the circumferentially equidistant positioning blocks 13 ensure that all magnet 3 are attached based on the same tooling reference. This allows for the continuous attachment of multiple magnets 3 without waiting for the adhesive to cure, avoiding the accumulation of tolerances caused by piece-by-piece operation. The positional deviation of the magnets 3 is significantly reduced, and the cogging force and torque pulsation of the motor are greatly reduced, thereby improving the smoothness of motor operation and overall performance.

[0053] In one embodiment, the distance between two adjacent positioning blocks 13 can be set to correspond to the size of the magnet 3, so that the formed magnet mounting area meets the mounting requirements.

[0054] Alternatively, please continue reading Figure 6 The inner side of the tooling ring 12 is provided with a plurality of through grooves 121. The through grooves 121 extend in a direction parallel to the axial direction of the tooling ring 12, and the plurality of through grooves 121 are arranged at intervals along the circumference of the tooling ring 12. The through grooves 121 are correspondingly arranged with the positioning blocks 13, and the positioning blocks 13 are inserted into the tooling ring 12 through the through grooves 121.

[0055] The cross-section of the through groove 121 can be set to correspond with the cross-section of the positioning block 13, so that the positioning block 13 can be inserted into the through groove 121. Multiple through grooves 121 are evenly distributed along the circumference of the tooling ring 12 on the inner side of the tooling ring 12, corresponding to multiple positioning blocks 13, to ensure accurate positioning of the attachment area of ​​the magnet 3 and realize the rapid assembly of the magnet 3.

[0056] In this embodiment, the multiple through slots 121 provided on the inner side of the tooling ring 12, in conjunction with the positioning inserts 13, allow for continuous operation of the magnet 3 application process without waiting for the adhesive to cure, avoiding the tolerance accumulation problem caused by applying each magnet piece individually. The positional accuracy of the magnet 3 is significantly improved, effectively reducing the cogging force and torque pulsation of the motor, enhancing the smoothness and efficiency of motor operation, meeting the stringent positioning accuracy requirements of high-performance motors for the magnet 3, and improving the practicality of the magnet positioning tooling 1.

[0057] Optionally, you can refer to the following: Figure 2 and Figure 7 The first end of the positioning plug 13 is inserted into the through groove 121. The width of the first end of the positioning plug 13 is smaller than the width of the second end of the positioning plug 13. The first end and the second end of the positioning plug 13 are opposite ends of the positioning plug 13.

[0058] The first end of the positioning plug 13 is the entrance end of the insertion slot 121, and its width is designed to be smaller than the width of the corresponding second end. The second end is the other end of the positioning plug 13. This gradually changing width structure makes it easy for the first end to be inserted into the slot 121, while also creating a clearance for the flange 22 located in the accommodating space, thus preventing interference between the positioning plug 13 and the flange 22 on the motor rotor 2. The widened design of the second end provides a larger supporting contact surface, allowing the positioning plug 13 to be closer to the surface of the annular body 21, thereby enhancing positioning stability and positioning efficiency.

[0059] In this embodiment, the positioning insert 13 features a gradually changing width design. The narrower end facilitates insertion into the through slot 121, while the wider end provides stable support, effectively preventing the insert from loosening or shifting during the placement of the magnet 3. When continuously placing multiple magnets 3, the process can be carried out sequentially without waiting for the adhesive to cure, avoiding the problem of tolerance accumulation caused by changes in the position of the insert and improving the practicality of the magnet positioning fixture 1.

[0060] Optionally, please continue to refer to [the relevant literature / reference]. Figure 6 and Figure 7 The first end of the positioning block 13 is provided with two protrusions 131, which are respectively located on opposite sides of the first end of the positioning block 13.

[0061] The cross-sectional profile of the through groove 121 on the tooling ring 12 is composed of an opening and a cavity. The width of the opening is smaller than the width of the cavity, and the cross-sectional shape of the cavity corresponds to the cross-sectional shape of the first end of the positioning insert 13.

[0062] Specifically, through the cooperation of the two protrusions 131 at the first end of the positioning insert 13 and the cavity, the positioning insert 13 and the through groove 121 can be accurately positioned. At the same time, since the width of the opening is smaller than the width of the cavity, and the first end of the positioning insert 13 corresponds to the cavity, after the first end of the positioning insert 13 is inserted into the through groove 121, the width of the opening will be smaller than the thickness of the first end of the positioning insert 13, thus restricting the first end of the positioning insert 13 and preventing the positioning insert 13 from falling out of the through groove 121, thereby improving the stability of the positioning insert 13 inserted into the through groove 121.

[0063] In this embodiment, the precise matching of the protrusion 131 with the slot cavity improves the insertion efficiency of the positioning insert 13. Simultaneously, the cooperation between the positioning insert 13 and the through slot 121 ensures that all magnets 3 are positioned based on the same reference during continuous placement, allowing multiple magnets 3 to be placed without waiting for the adhesive to cure, thus significantly reducing the positional deviation of the magnets 3. The improved positional accuracy of the magnets 3 directly reduces the cogging force and torque pulsation of the motor, improves the smoothness of motor operation, enhances overall performance and manufacturing efficiency, and increases the practicality of the magnet positioning fixture 1.

[0064] Alternatively, please continue reading Figure 8 The base 11 is provided with a first protruding ring 111, and the outer diameter of the first protruding ring 111 is set to correspond to the inner diameter of the tooling ring 12.

[0065] The first protruding ring 111 on the base 11 serves as the mounting reference structure for the tooling ring 12. Its outer diameter can be precisely designed to perfectly match the inner diameter of the tooling ring 12, ensuring that the tooling ring 12 can be stably and reliably fitted onto the first protruding ring 111, thereby achieving precise positioning and fixing between the tooling ring 12 and the base 11.

[0066] In this embodiment, by precisely matching the outer diameter of the first protruding ring 111 with the inner diameter of the tooling ring 12, the installation position of the tooling ring 12 on the base 11 is always in an ideal state, avoiding the positioning deviation caused by unstable tooling installation in the prior art. This stable installation directly improves the consistency of the reference during the magnet 3 placement process, enabling all magnets 3 to be continuously placed based on the same precise reference point, and the positioning of multiple magnets 3 can be completed without waiting for the adhesive to cure.

[0067] Optionally, the base 11 is also provided with a second protruding ring 112. The size of the second protruding ring 112 is smaller than that of the first protruding ring 111, and the central axis of the second protruding ring 112 overlaps with the central axis of the first protruding ring 111. The outer diameter of the second protruding ring 112 corresponds to the inner diameter of the annular body 21.

[0068] The base 11 is provided with a second raised ring 112, the outer diameter of which precisely matches the inner diameter of the annular body 21 of the motor rotor 2. This ensures that when the annular body 21 is in the accommodating space, it fits snugly onto the second raised ring 112, guaranteeing a tight fit between the inner wall of the annular body 21 and the outer wall of the second raised ring 112 during assembly, forming a stable fit and preventing axial or radial displacement of the motor rotor 2 during the installation of the magnet 3.

[0069] Since the central axis of the second raised ring 112 overlaps with the central axis of the first raised ring 111, and the central axis of the annular body 21 fixed on the second raised ring 112 can overlap with the central axis of the second raised ring 112, and the central axis of the tooling ring 12 fixed on the first raised ring 111 can overlap with the central axis of the first raised ring 111, it can be ensured that when the motor rotor 2 is placed in the accommodating space, the central axis of the annular body 21 overlaps with the central axis of the tooling ring 12, thereby improving the consistency of the multiple magnet 3 attachment areas formed on the surface of the annular body 21 by the magnet positioning tool 1.

[0070] In this embodiment, the precise correspondence between the outer diameter of the second protruding ring 112 and the inner diameter of the annular body 21 significantly enhances the positioning stability of the motor rotor 2 in the magnet positioning fixture 1, effectively eliminating the positional deviation of the magnet 3 caused by the slight movement of the motor rotor 2 in the prior art. By providing precise positioning between the outer diameter of the second protruding ring 112 and the inner diameter of the annular body 21, the consistency of the placement position of all magnets 3 is improved. The improved positional accuracy of the magnets 3 directly reduces the cogging force and torque pulsation of the motor, resulting in smoother motor operation, substantial performance optimization, and solving the problem of motor performance degradation described in the disclosure, thereby improving the practicality of the magnet positioning fixture 1 provided in this application embodiment.

[0071] Alternatively, please continue reading Figure 9 and Figure 10 The magnetic positioning fixture 1 also includes at least one fixing member 14, which is inserted through the base 11 and one end is detachably connected to the motor rotor 2.

[0072] The fastener 14 can be a detachable connection structure such as a screw. When the motor rotor 2 is placed in the accommodating space, the fastener 14 can pass through the base 11 and one end is connected to the motor rotor 2, specifically the annular body 21, to fix the annular body 21 to the base 11, so as to prevent the motor rotor 2 from being relatively displaced during the process of attaching the magnet 3 and to ensure the stability of the position of the motor rotor 2.

[0073] In this embodiment, after the motor rotor 2 is fixed on the base 11 by the fastener 14, the position of the motor rotor 2 remains stable throughout the entire process of magnet 3 attachment, avoiding the efficiency reduction caused by the movement of the motor rotor 2, improving the positional accuracy of all magnet 3 attachments, and significantly reducing the positional deviation of the magnet 3. This effectively reduces the cogging force and torque pulsation of the motor, improves the smoothness of motor operation and overall performance, and enhances the practicality of the magnet positioning fixture 1.

[0074] In summary, the magnet positioning fixture 1 provided in this application, through the combined design of the fixture ring 12 and the positioning insert 13, allows the magnets 3 to be continuously attached without waiting for the adhesive to cure. This effectively avoids the tolerance accumulation problem caused by attaching each magnet piece by piece in the prior art, significantly reducing the positional deviation of all magnets 3. This, in turn, greatly reduces the cogging force and torque pulsation of the motor, improving the smoothness of motor operation. Simultaneously, this fixture structure simplifies the operation process, shortens the manufacturing cycle of attaching the magnets 3, improves production efficiency, and solves the problem of motor performance degradation caused by excessive positional deviation of the magnets 3.

[0075] This application also provides a magnet-attaching device (not shown in the figure), which includes the magnet positioning fixture 1 and the moving component as described above. The moving component is spaced apart from the magnet positioning fixture 1 and is used to place the motor rotor 2 on the magnet positioning fixture 1 and attach a plurality of magnets 3 to the motor rotor 2.

[0076] The moving component may include a robotic arm or similar structure to move the motor rotor 2 onto the magnet positioning fixture 1. The magnet positioning fixture 1 can form multiple magnet 3 application areas on the motor rotor 2. The moving component can also move multiple magnets 3 to apply them onto the magnet 3 application areas, thereby automatically applying magnets 3 to the motor rotor 2, improving the efficiency of applying magnets 3 to the motor rotor 2, reducing manual intervention, and enhancing the user experience of the magnet 3 application device.

[0077] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A magnet positioning fixture for a surface-mounted motor rotor, characterized in that, The motor rotor includes an annular body and a flange extending radially outward from the end of the annular body, with a plurality of magnets attached to the outer surface of the annular body. The magnetic positioning fixture includes: Base; A tooling ring, one end of which is detachably mounted on the base, and the tooling ring forms an accommodating space for accommodating the flange and at least a portion of the annular body; wherein, when the annular body is disposed within the accommodating space, the central axis of the annular body overlaps with the central axis of the tooling ring; Multiple positioning blocks are detachably inserted into the other end of the tooling ring, and the multiple positioning blocks and the tooling ring form multiple magnet attachment areas on the surface of the annular body.

2. The magnetic steel positioning fixture according to claim 1, characterized in that, The plurality of positioning blocks are arranged sequentially at intervals along the circumference of the tooling ring on the inner side of the tooling ring, and the distance between any positioning block and the adjacent positioning block is equal.

3. The magnetic steel positioning fixture according to claim 1, characterized in that, The inner surface of the tooling ring is provided with a plurality of through grooves. The through grooves extend in a direction parallel to the axial direction of the tooling ring, and the plurality of through grooves are arranged at intervals along the circumference of the tooling ring. The through grooves are correspondingly arranged with the positioning blocks, and the positioning blocks are inserted into the tooling ring through the through grooves.

4. The magnetic steel positioning fixture according to claim 3, characterized in that, The first end of the positioning block is inserted into the through groove, and the width of the first end of the positioning block is smaller than the width of the second end of the positioning block; The first end and the second end of the positioning block are two opposite ends of the positioning block.

5. The magnetic steel positioning fixture according to claim 4, characterized in that, The first end of the positioning block is provided with two protrusions, which are respectively located on opposite sides of the first end of the positioning block. The cross-sectional profile of the through groove is composed of an opening and a cavity. The width of the opening is smaller than the width of the cavity, and the cross-sectional shape of the cavity corresponds to the cross-sectional shape of the first end of the positioning block.

6. The magnetic steel positioning fixture according to claim 1, characterized in that, The inner diameter of the tooling ring is greater than or equal to the outer diameter of the flange.

7. The magnetic steel positioning fixture according to claim 1, characterized in that, The base is provided with a first protruding ring, and the outer diameter of the first protruding ring is set to correspond to the inner diameter of the tooling ring.

8. The magnetic steel positioning fixture according to claim 7, characterized in that, The base is also provided with a second protruding ring, the size of the second protruding ring is smaller than the size of the first protruding ring, and the central axis of the second protruding ring overlaps with the central axis of the first protruding ring. The outer diameter of the second raised ring corresponds to the inner diameter of the ring-shaped body.

9. The magnetic steel positioning fixture according to claim 1, characterized in that, The magnetic positioning fixture also includes at least one fixing component, which is inserted through the base and has one end detachably connected to the motor rotor.

10. A device for attaching magnets, characterized in that, The magnet attaching device includes a magnet positioning fixture and a moving component as described in any one of claims 1-9. The moving component is spaced apart from the magnet positioning fixture and is used to position the motor rotor on the magnet positioning fixture and attach multiple magnets to the motor rotor.

Images